Since I don't know what you intend for George I'll have Tyrael keep them guessing.
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"Many things are not as they seem within this universe of you mortals," Tyrael replies, fascination clinging to the fringes of his voice. "Do not let your eyes deceive you; because you cannot see the Force does this mean it is not there? So too can a man not physically exist but not be dead in entirety."
His head turns and Leina feels the Guardian's hidden gaze fall to her. "Eventually the one you speak of shall find his way through the darkness and return..." he continues, "but in the end we can neither hinder nor advance the matter. For now we must proceed without his assistance..."
"Proceed?" Riordan ponders suddenly.
Tyrael motions towards the key before them. "Despair is merely one of the seven, no? Even now Mir'athorin searches for the other keys; he is one step ahead... as always. But you -and those who shall accompany you- have all been predestined to obtain and guard the valsai'ium keys."
Riordan shakes his head in disbelief. Predestined? The madness of this... place... "You speak as if this is our destiny... to undertake the task you place at our feet," the noble retorts darkly. "Fate is a twisted mistress who can change her mind about such matters at any time... Guardian."
Tyrael turns his attention to Riordan. "Such a fool," the Guardian scolds quietly, his words barely reaching Leina and Mat, "to speak as if I do not know you, Riordan Koga, or share the burden you bear..."
Riordan growls sharply, an unexpected response. "Ekam..."
Tyrael ignores the comment and continues. "Fate plays many tricks, yes, but Mir'athorin is the king of this game and no longer can she alter its path. The seven keys must be found..."
...Korriban...
Natayla walks along the wall, her blood stained nails scrapping into the stone like knives, leaving scars in their wake. Her movements lead her in a circle around Jester. "Drihten... it is derived from an ancient word meaning 'paradise'. It is where all the good little boys and girls so once death has claimed their pathetic bodies. And it is there... that the Force resides in a physical state..."
"Now what would happen... I wonder..." she continues, casting a dangerous glance in his direction, "should the Force itself become corrupted by our... power?"
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Ekam: a curse on your opponent's name; bastard
George: Tyrael is fixing to explain how to find the keys and again explain that they have to do it because of Mortis. Feel free to ask anymore questions or be like "But we don't know where to start" anything like that. ^_^
Also, when Tyrael speaks of "sharing someone's burden" this means he understands it more than actually bearing it himself. But I wonder what Riordan could be hiding for the Guardian to say that... hmmm...
Jest: Feel free to go crazy with your answer. And by "our power" Natayla means the "Force vampire power"